Why do bicycles…

Why do you never see elephants hiding behind trees? They’re so good at it.

What’s the reason for saying ‘after dark’ when it’s actually really after light?

What math problem do German students have trouble answering? Do you know what the square root of 81 is?

Know knock. Who's there. Moo. Moo who? Make up your mind: Are you a cow or an owl?

What is a scarecrow's favourite fruit? A strawberry.